(6 mark)
Q.4. Write detailed answer for the following question. (any 2)
1). What is Push and Pull? And identify the situation of Pull & Push7 And also explain
why?
a). Removing paste from the toothpaste.
b). Removing of ring from the fingers.
c). On moving a stationary or (stopped) car
2). Explain why sliding Friction is less than static friction ? and also factor's affecting
friction.
3). Name the types of contact and nen-contact force and explain in one sentence each
type?
Answers
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Answered by
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Answer:
(a) In squeezing a piece of lemon, force responsible is muscular force which changes the shape of the lemon and the agent exerting the force is fingers.
(b) In taking out paste from a tube the force changes the shape of the tube and the agent exerting the force are the hands or fingers.
(c) In suspending a load from a spring while other end is on a hook fixed, the force changes the shape of the spring and the agent exerting the force is the load.
(d) In the high jump by the athlete the force acts on the ground and the ground helps the athlete in jumping. The effect os change in motion and the cause id muscular force or friction force.
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